Joan Baez in 2012
Joan Baez, 85 years old, who sang Dylan's "The Times They Are A-Changin'" with Maggie Rogers and Tom Morello at the St. Paul rally. She connected the moment to singing with Martin Luther King Jr. in Grenada, Mississippi in 1966. © Steve Jozefczyk, CC BY-SA 2.0, via Wikimedia Commons

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